   (dc/quick-check 500 (lookup-prop gen-action))
   (dc/quick-check 500 iterator-prop)
   ;; cljs.core.pr_str(cemerick.double_check.quick_check(1000, aurora.btree.iterator_prop)
+  (dc/quick-check 100 intersection-prop)
+  ;; cljs.core.pr_str(cemerick.double_check.quick_check(1000, aurora.btree.intersection_prop))
 
 
   (defn f []

                 actions (gen/vector gen-action)
                 movements (gen/vector gen-movement)]
                (run-iterator-prop min-keys actions movements)))

(comment
  (dc/quick-check 1000 least-prop)

      (Intersection. (into-array (sort-by #(.key %) compare-keys iterators)) false))
    (aget iterators 0)))

(defn iter-seq [iterator]
  (let [results #js []]
    (while (false? (.-end? iterator))
      (.push results (.key iterator))
      (.next iterator))
    results))

;; TESTS

(def gen-key
